Hayek and the concept of law

I've been away for a while but I would like to get discussions rolling again. I plan on blogging a few thoughts regarding Hayek's theory of law and his (brief) comments on legal positivism. It seems to me that he was either deeply confused about contemporary legal positivism or simply inexcusably out-dated in his reference to a long-since-altered theory of legal positivism.  We'll see where this leads.